<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>自定义事件</title>
    <style>
        .container{
            width: 200px;
            height: 200px;
            margin: 0 auto;
            background-color: #f00;
        }
    </style>
</head>
<body>
    <div class="container"></div>
    <button onclick="btnClick()">按钮</button>
    <script src="js/ce.js"></script>
</body>
</html>